document.write( "Question 352177: Car A and Car B enter an expressway at the same time and place and head in the same direction. Car A travels at 70 mph. If after 2.5 hours Car B is 50 miles behind Car A, what is the speed of Car B? \n" ); document.write( "
Algebra.Com's Answer #251653 by Fombitz(32388)\"\" \"About 
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\n" ); document.write( "Rate*Time=Distance
\n" ); document.write( "\"70%2At=D%5Ba%5D\"
\n" ); document.write( "\"R%5Bb%5D%2At=D%5Bb%5D\"
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\n" ); document.write( "When \"t=2.5\"hrs,
\n" ); document.write( "\"D%5Ba%5D=175\" miles
\n" ); document.write( "\"D%5Bb%5D=175-50=125\" miles
\n" ); document.write( "From above,
\n" ); document.write( "\"R%5Bb%5D%2A2.5=125\"
\n" ); document.write( "\"highlight%28R%5Bb%5D=50%29\" mph
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